Yeah, I had already checked that. It says I should place them on my latest learned attack from the secondary power set, which would be Shadow Maul. But since it's not specific, I wasn't sure if it would really apply to any secondary power. I hadn't decided yet either because while I do want to do more dps, the extra resistance from TI or healing from DP would also help a lot. Especially because I can't do much damage to zombies anyway because of their resistance to smashing. And since those are the focus of my current quest chain...